Update README.md

Add beginner-friendly data.json

README.md

@@ -23,7 +23,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 |A|[Angular](#angular), [Ansible](#ansible)|
 |C|[C](#c), [C#](#c-1), [C++](#c-2), [Clojure](#clojure), [CSS](#css)|
 |D|[Dart](#dart)|
-|E|[Elixir](#elixir), [Elm](#elm)|
+|E|[Electron](#electron), [Elixir](#elixir), [Elm](#elm)|
 |G|[Go](#go)|
 |H|[Haskell](#haskell)|
 |J|[Java](#java), [JavaScript](#javascript), [JSON](#json), [Julia](#julia)|
@@ -87,6 +87,10 @@ If you would like to be guided through how to contribute to a repository on GitH
 - [flutter](https://github.com/flutter/flutter) _(label: good first issue)_ <br> Flutter is Google's UI toolkit for building beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase.
 - [OpenFoodFacts](https://github.com/openfoodfacts/smooth-app) _(label: good first issue)_ <br> Collaborative, free and open database of food products from around the world. Scan barcode to get info or add a product
 
+## Electron
+
+- [Posnic](https://github.com/Posnic/POS) _(label: good first issue)_ <br> Offline-first open source POS and billing software for retail shops and restaurants, with online/offline workflows.
+
 ## Elixir
 
 - [Ecto](https://github.com/elixir-ecto/ecto) _(label: Level:Starter)_ <br> Ecto is a database wrapper and language integrated query for Elixir
@@ -124,9 +128,11 @@ If you would like to be guided through how to contribute to a repository on GitH
 ## Java
 
 - [Catima - Android App](https://github.com/CatimaLoyalty/Android) _(label: good first issue)_ <br> Catima, a Loyalty Card & Ticket Manager for Android
+- [Checkstyle](https://github.com/checkstyle/checkstyle) _(label: good first issue)_ <br> A development tool to help programmers write Java code that adheres to a coding standard.
 - [Codename One](https://github.com/codenameone/CodenameOne) _(label: good first issue)_ <br> Cross-platform mobile app development framework for Java developers
 - [DSA](https://github.com/abhishektripathi66/DSA) _(label: good first issue)_ <br> DSA questions practising repo for Java developers
 - [elasticsearch](https://github.com/elastic/elasticsearch) _(label: good first issue)_ <br> Open Source, Distributed, RESTful Search Engine.
+- [Hiero SDK Java](https://github.com/hiero-ledger/hiero-sdk-java) _(label: Good First Issue)_ <br> Java SDK for interacting with the Hiero network.
 - [JabRef](https://github.com/JabRef/jabref) _(label: good first issue)_ <br> Desktop application for managing literature references using modern Java features including JavaFX. Dedicated to code quality and constructive feedback: Each Pull Request is reviewed by two developers to provide high-quality feedback and to ensure high quality of new contributions.
 - [OpenMetadata](https://github.com/open-metadata/OpenMetadata) _(label: good first issue)_ <br> OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
 - [QuestDB](https://github.com/questdb/questdb) _(label: Good first issue)_ <br> Questdb is a fast open source SQL time series database.
@@ -149,6 +155,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 - [Create React App](https://github.com/react/create-react-app) _(label: good first issue)_ <br> Create React apps with no build configuration.
 - [cypress](https://github.com/cypress-io/cypress) _(label: good first issue)_ <br> Fast, easy and reliable testing for anything that runs in a browser.
 - [Decap CMS](https://github.com/decaporg/decap-cms) _(label: good first issue)_ <br> Open source content management for your git workflow.
+- [DevShelf](https://github.com/RitualDev-Lab/DevShelf) _(label: good first issue)_ <br> A crowdsourced, zero-paywall directory of developer tools, free APIs, and 1-click boilerplates with continuous uptime monitoring.
 - [electron](https://github.com/electron/electron) _(label: good first issue)_ <br> Build cross platform desktop apps with JavaScript, HTML, and CSS
 - [Ember.js](https://github.com/emberjs/ember.js) _(label: Good-for-New-Contributors)_ <br> A JavaScript framework for creating ambitious web applications.
 - [ESLint](https://github.com/eslint/eslint) _(label: good first issue)_ <br> A fully pluggable tool for identifying and reporting on patterns in JavaScript.
@@ -180,6 +187,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 - [nuclear](https://github.com/nukeop/nuclear) _(label: good first issue)_ <br> Multiplatform music player that streams from free sources.
 - [p5.js](https://github.com/processing/p5.js) _(label: good first issue)_ <br> p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web.
 - [pixi.js](https://github.com/pixijs/pixijs) _(label: 🤩 Good First PR)_ <br> A 2D JavaScript Renderer
+- [Posnic](https://github.com/Posnic/POS) _(label: good first issue)_ <br> Offline-first open source POS and billing software for retail shops and restaurants, with online/offline workflows.
 - [PouchDB](https://github.com/apache/pouchdb) _(label: help-wanted)_ <br> PouchDB is a pocket-sized database.
 - [ramda-adjunct](https://github.com/char0n/ramda-adjunct) _(label: help-wanted)_ <br> Ramda Adjunct is the most popular and most comprehensive set of functional utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.
 - [Rawsec Cybersecurity Inventory](https://gitlab.com/rawsec/rawsec-cybersecurity-list) _(label: difficulty::easy)_ <br> An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
@@ -343,6 +351,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 - [Berry - Active development trunk for Yarn](https://github.com/yarnpkg/berry) _(label: good first issue)_ <br> Fast, reliable, and secure dependency management.
 - [Booster](https://github.com/boostercloud/booster) _(label: good first issue)_ <br> A truly serverless framework, write your code and deploy it in seconds without any server configuration files.
 - [Devopness](https://github.com/devopness/devopness) _(label: good first issue)_ <br> Deploy any software to any cloud: automated DevOps workflows to save software teams time and money.
+- [DevShelf](https://github.com/RitualDev-Lab/DevShelf) _(label: good first issue)_ <br> A crowdsourced, zero-paywall directory of developer tools, free APIs, and 1-click boilerplates with continuous uptime monitoring.
 - [DocsGPT](https://github.com/arc53/DocsGPT) _(label: good first issue)_ <br> Open-source RAG assistant that helps users get reliable answers from knowledge sources while avoiding hallucinations.
 - [H2O Wave](https://github.com/h2oai/wave) _(label: good first issue)_ <br> Realtime Web Apps and Dashboards framework for Python and R. Suited (not only) for AI audience.
 - [Hasura GraphQL Engine](https://github.com/hasura/graphql-engine) _(label: good first issue)_ <br> Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

data.json

@@ -428,6 +428,15 @@
             ],
             "description": "DSA questions practising repo for Java developers"
         },
+        {
+            "name": "Hiero SDK Java",
+            "link": "https://github.com/hiero-ledger/hiero-sdk-java",
+            "label": "Good First Issue",
+            "technologies": [
+                "Java"
+            ],
+            "description": "Java SDK for interacting with the Hiero network."
+        },
         {
             "name": "name-suggestion-index",
             "link": "https://github.com/osmlab/name-suggestion-index",
@@ -1948,6 +1957,16 @@
             ],
             "description": "An inventory of tools and resources that aims to help people to find everything related to CyberSecurity."
         },
+        {
+            "name": "DevShelf",
+            "link": "https://github.com/RitualDev-Lab/DevShelf",
+            "label": "good first issue",
+            "technologies": [
+                "JavaScript",
+                "TypeScript"
+            ],
+            "description": "A crowdsourced, zero-paywall directory of developer tools, free APIs, and 1-click boilerplates with continuous uptime monitoring."
+        },
         {
             "name": "videocall-rs",
             "link": "https://github.com/security-union/videocall-rs",
@@ -1994,6 +2013,15 @@
             ],
             "description": "The open source Firebase alternative. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications."
         },
+        {
+            "name": "Checkstyle",
+            "link": "https://github.com/checkstyle/checkstyle",
+            "label": "good first issue",
+            "technologies": [
+                "Java"
+            ],
+            "description": "A development tool to help programmers write Java code that adheres to a coding standard."
+        },
         {
             "name": "fenn",
             "link": "https://github.com/pyfenn/fenn",
@@ -2003,6 +2031,16 @@
             ],
             "description": "A simple framework that automates ML/DL workflows by providing prebuilt trainers, templates, logging, configuration management, and much more."
         },
+        {
+            "name": "Posnic",
+            "link": "https://github.com/Posnic/POS",
+            "label": "good first issue",
+            "technologies": [
+                "JavaScript",
+                "Electron"
+            ],
+            "description": "Offline-first open source POS and billing software for retail shops and restaurants, with online/offline workflows."
+        },
         {
             "name": "OffPDF",
             "link": "https://github.com/McanKul/offpdf",